Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2012 Andrew Neal Licensed under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with the
 * License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law
 * or agreed to in writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */

import android.content.Context;

import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class Main {
    /**
     * Used to determine if there is an active data connection and what type of
     * connection it is if there is one
     * 
     * @param context The {@link Context} to use
     * @return True if there is an active data connection, false otherwise.
     *         Also, if the user has checked to only download via Wi-Fi in the
     *         settings, the mobile data and other network connections aren't
     *         returned at all
     */
    public static final boolean isOnline(final Context context) {
        /*
         * This sort of handles a sudden configuration change, but I think it
         * should be dealt with in a more professional way.
         */
        if (context == null) {
            return false;
        }

        boolean state = false;
        final boolean onlyOnWifi = true;//PreferenceUtils.getInstace(context).onlyOnWifi();

        /* Monitor network connections */
        final ConnectivityManager connectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);

        /* Wi-Fi connection */
        final NetworkInfo wifiNetwork = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (wifiNetwork != null) {
            state = wifiNetwork.isConnectedOrConnecting();
        }

        /* Mobile data connection */
        final NetworkInfo mbobileNetwork = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if (mbobileNetwork != null) {
            if (!onlyOnWifi) {
                state = mbobileNetwork.isConnectedOrConnecting();
            }
        }

        /* Other networks */
        final NetworkInfo activeNetwork = connectivityManager.getActiveNetworkInfo();
        if (activeNetwork != null) {
            if (!onlyOnWifi) {
                state = activeNetwork.isConnectedOrConnecting();
            }
        }

        return state;
    }
}